Keyless clamp assembly for reciprocating tool

Details Keyless clamp assembly for reciprocating tool Keyless clamp assembly for reciprocating tool

1995-10-10

2001-05-29

Peterson, Kenneth E. (Department: 3724)

Cutlery

Cutting tools

Saw

C083S699210, C279S905000

Reexamination Certificate

active

06237231

ABSTRACT:

BACKGROUND OF THE INVENTION
Hand held reciprocating tools, such as electric reciprocating saws, include removable blades which permit the use of different cutting edges as may be necessary for cutting different materials and for the replacement of worn or damaged blades. This requires a blade mounting system which allows rapid blade replacement while accurately and firmly coupling the blade to the tool. One problem with blades for hand held reciprocating saws is breakage at the junction between the blade and the substantially narrower tang.
SUMMARY OF THE INVENTION
It is an object of the invention to provide a new and improved blade clamping assembly for reciprocating tools.
A further object of the invention is to provide a blade clamping assembly for reciprocating saws which does not require the use of a key or tool for blade replacement.
Another object of the invention is to provide a keyless blade clamping assembly for reciprocating saws which permits rapid blade replacement and firmly and accurately holds the blade in position.
A still further object of the invention is to provide a blade clamping assembly for reciprocating saws which reduces blade breakage.
These and other objects and advantages of the present invention will become more apparent from the detailed description thereof taken with the accompanying drawings.
In general terms the invention comprises a reciprocating tool including a reciprocating member and clamping means for clamping one end of a blade to the reciprocating member, the blade having a hole formed in the one end. The clamping means includes a first member for engaging the blade at spaced apart points and a second member coupled to the first member for engaging the hole and so as to provide three points of contact between the clamping means and the blade. Means are also provided for engaging the clamping means and the reciprocating means for adjustably forcing the first and second members into pressure engagement with the end of the blade.


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